Problem 1
Describe the scientific method.
Problem 1
Identify each as either matter or not matter. a) a book b) hate c) light d) a car e) a fried egg
Problem 2
Give an example of matter in each phase: solid, liquid, or gas.
Problem 2
What is the scientific definition of a hypothesis? Why is the phrase a hypothesis is just a guess an inadequate definition?
Problem 3
Does each statement represent a physical property or a chemical property? a) Sulfur is yellow. b) Steel wool burns when ignited by a flame. c) A gallon of milk weighs over eight pounds.
Problem 3
Why do scientists need to perform experiments?
Problem 4
What is the scientific definition of a theory? How is this word misused in general conversation?
Problem 4
Does each statement represent a physical property or a chemical property? a) A pile of leaves slowly rots in the backyard. b) In the presence of oxygen, hydrogen can interact to make water. c) Gold can be stretched into very thin wires.
Problem 5
Does each statement represent a physical change or a chemical change? a) Water boils and becomes steam. b) Food is converted into usable form by the digestive system. c) The alcohol in many thermometers freezes at about - 40 degrees Fahrenheit.
Problem 5
What is the scientific definition of a law? How does it differ from the everyday definition of a law?
